Specification Sheet

Installation & Operation 2−7MN408
Figure 2-4 Typical Motor Performance VS Voltage Variations
+20
+15
+10
+5
0
−5
−10
−15
−20
−15 −10 −5 0 +5 +10 +15
Voltage Variations (%)
Changes in Motor Performance (%)
Full -Load
Current
Full -Load
Current
Power
Factor
Power
Factor
Efficiency
Efficiency
Maximum
Torque
Maximum
Torque
Initial Lubrication BaldorSReliance motors are shipped from the factory with the bearings properly packed with grease
and ready to operate. Where the unit has been subjected to extended storage (6 months or more) the
bearings should be relubricated (regreasable type) prior to starting. When motors are equipped for oil mist
lubrication refer to the instruction manual for installation, operation, and maintenance of oil mist lubrication
systems.
Caution: Shaker Duty motors must be properly lubricated prior to Start Up to prevent damage.
See Section 3.
First Time Start Up Be sure that all power to motor and accessories is off. Be sure the motor shaft is disconnected from
the load and will not cause mechanical rotation of the motor shaft.
1. Make sure that the mechanical installation is secure. All bolts and nuts are tightened etc.
2. If motor has been in storage or idle for some time, check winding insulation integrity.
3. Inspect all electrical connections for proper termination, clearance, mechanical strength and electrical
continuity.
4. Be sure all shipping materials and braces (if used) are removed from motor shaft.
5. Manually rotate the motor shaft to ensure that it rotates freely.
6. Replace all panels and covers that were removed during installation.
7. Momentarily apply power and check the direction of rotation of the motor shaft.
8. If motor rotation is wrong, be sure power is off and change the motor lead connections.
Verify rotation direction before you continue.
9. Start the motor and ensure operation is smooth without excessive vibration or noise.
If so, run the motor for 1 hour with no load connected.
10. After 1 hour of operation, disconnect power and connect the load to the motor shaft.
Verify all coupling guards and protective devices are installed. Ensure motor is properly ventilated.
11. If motor is totally enclosed fan−cooled or non−ventilated it is recommended that condensation drain
plugs, if present, be removed. These are located in the lower portion of the end−shields.
Totally enclosed fan−cooled “XT” motors are normally equipped with automatic drains which may be
left in place as received.